Centrifugal pump



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M. WAGNER. CENTRIPU'GAL PUMP.

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UNITED STATES PATENT EEIQE.

MATT WAGNER, OF TACOMA, 'WASHINGTON.

' CENTRlFLlG-AL Pu MP.

SPEGIFIGATIONfQrming part of Letters Patent N 0. 531,074, dated December18, 1 894.

Application filed June 22,1894. Serial No. 515,336.

To all whom it may concern.-

Be it known that I, MATT WAGNER, a citizen of the United States,residing at Tacoma, in the county of Pierce and State of Washington,have invented certain new and useful Improvements in Centrifugal Pumps;and I do hereby declare the following to be a full, clear,

. and exact description of the invention, such as will enable othersskilled in the art to which of repair. I provide means for preventingsand and other gritty substances from getting between the casing and therunner and thus the wear consequent upon the friction caused by suchsand when it does enter is obviated. I further improve upon the priorconstructions by forming the pockets of the wheel so they will each workindependently instead of in pairs as heretofore, and thereby increasethe suction and pressure of the pump and its operation necessarilyimproved and facilitated.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be specifically defined by theappended claim.

The invention in this instance resides in the peculiar combinations, andthe construction, arrangement and adaptation of the various parts, allas more fully hereinafter described, shown in the drawings and thenparticularly pointed out in the claim.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which- Figure 1 is a sectional elevation,transversely of the shaft, and showing only a portion of the outercasing. Fig. 2 isasectional elevation of the same, on the line 22 ofFig. 1. Fig. 3 is a detail sectional view of the portion of the casingand runner showing the means (No model.)

for preventing access of sand, 850., between the same.

, Like letters of reference indicate like parts throughout the severalviews.

Referring now to the drawings A designates the outer casing which isconstructed in sections which are detachably connected together in anyWell known or approved manner, as for instance by bolts a passed throughthe flanges 0. thereof, the same being supported upon the rests orpillar blocks B by means of the castings or brackets B. This casing isprovided=with an inlet opening 0 arranged in line with the horizontaldiameter and further with an outlet or passage 0' which extendsthroughthe extension A of the casing as seen best in Fig. 1.

At opposite sides the casing is provided with bearings d for the shaft Dwhich extends through the center of the casing as shown transverselythereof and upon which shaft the wheel is keyed in any suitable manner.Thiswheel is formed with a plurality of pockets, preferably twelve innumber, which pockets E are reversely arranged upon oppositesides of thewheel in spiral lines and running to the center and opening outtherefrom.

These pockets are disposed alternately; that is to say, one is firstformed on one side of the wheel and the adjacent one upon the oppositeside and at the center of the wheel an enlargement F is formed as shownin Fig. 2 to providemeans of communication between the several .pocketsat the center upon opposite sides. Each of these pockets is designed towork independently, instead of in pairs as heretofore, and by this meansthe suction as well as the pressure of the pump is increased, and theefficiency is therefore proportionately increased and the operation ofthe pump necessarilyimprov'ed and facilitated.

It is a well known fact that one of the most serious difficulties withthis class of pumps is the wear occasioned by sand and other foreignsubstances getting between the runner 5 this ingress of sand or othersubstance between the casing and runner. In Fig. 2 I have shown thecasing as formed with a flange II which extends inward from oppositesides thereof as seen in said Fig. 2 so as to exclude the sand, &c.,from the space between the casing and runner. In Fig. 3 I have shown thecasing at these points as formed with an annular groove or channel 2' inwhich is fitted a ring I which is adjustable by means of a set screw orscrews held in the hub of the casing as shown and by which means therings may be adjusted as may be necessitated by wear or otherwise.Behind each ring in the channel or groove is an annular wedge J whichserves to hold the ring in adjustment and prevent shock or blows or thevibration of the pump from releasing the ring and thereby the said ringis always held in its adjusted position. It will be readily seen howthis means prevents the entrance of sand, dirt or other foreign matterbetween the casing and runner and the wear thereby greatly reduced.

"What is claimed as new is In a centrifugal pump,the combination withthe Wheel having an annular flange on the sides thereof and its casin ghaving an annular groove near the center thereof, an annular ring insaid groove, an annular wedge back of the ring and a set screw engagingthe ring, the said annular flange on said wheel adapted to fit againstthe sides of the annular ring in said groove to prevent the ingress ofsand and the like, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

M ATT WAGNER.

\Vitnesses:

R. P. GOODWIN, JOHN WEISGERBER.

